نتایج جستجو برای: seasonal plants
تعداد نتایج: 260590 فیلتر نتایج به سال:
Experts were interviewed on the grazing preferences of sheep in upland vegetation types and on the responses of plants to grazing. A qualitative model of direction of change in species abundance given different seasonal sheep grazing management regimes was constructed with the expert information. The model was tested against empirical data of sward responses to summer-only grazing. The approach...
A cellular automata model is proposed to analyze the progress of Citrus Variegated Chlorosis epidemics in São Paulo oranges plantation. In this model epidemiological and environmental features, such as motility of sharpshooter vectors which perform Lévy flights, hydric and nutritional level of plant stress and seasonal climatic effects, are included. The observed epidemics data were quantitativ...
the studies conducted on plants grown in kashan have showed the presence of abundant valuable industrial - medicinal plants. unforlunately, a lot of these plants are removed as weed or grazed by livestock because of lack of inhabitants' ignorance of their using and mismanagement. - perovskia abrotanoides is of lamiaceae family. the natural habitat of this plant is mostly near waterways, the bed...
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